ESR (RBC sed rate) Quiz
Preview:
decrease of the zeta potential
A. fall faster,
increasing ESR
B. fall slower,
decreasing ESR
first 10 minutes, initial period of aggregation, rouleaux is formed
A. Lag phase
B. Decantation phase
C. Packing phase
first 24 hours of a disease process, the ____ may be normal and ____ elevated
A. ESR
CPR
B. CPR
ESR
C. Acute Phase Reactants,
CPR
D. ESR,
Acute Phase Reactants
Usually performed in Hematology Department of Laboratory
A. CRP
C-Reactive Protein Test
B. ESR
Erythrocyte Sedimentation Rate
Macrocytes
A. fall faster,
increasing ESR
B. fall slower,
decreasing ESR
final period, RBCs crowd closely together, last 10 minutes
A. Lag phase
B. Decantation phase
C. Packing phase
Serum glycoproteins
Levels increase quickly in response to injury or trauma to tissues and during infections
They are non-specific indicators of inflammation (i.e., cannot diagnose a specific infectious agent or process)
A. Acute Phase Reactants
B. Erythrocyte Sedimentation Rate
C. C-Reactive Protein
D. none
Specimens needs Sodium Citrate tube collection
A. Wintrobe or Modified Westergren
B. true Westergren
plays a part in your immune response by interacting with your body’s complement system
A. CRP
C-Reactive Protein Test
B. ESR
Erythrocyte Sedimentation Rate
When inflammatory process is present, fibrinogen enters the blood in high amounts and causes red cells to stick to each other
A. CRP
C-Reactive Protein Test
B. ESR
Erythrocyte Sedimentation Rate
Automated ESR Methods
Roller Principle
A. measures RBC aggregation and extrapolates the sedimentation rate
B. degree of settling of RBCs in plasma in an anticoagulated specimen during a specific time
test is specific for a specific disease. i.e. Rheumatoid Arthritis
A. Acute Phase Reactants
B. Erythrocyte Sedimentation Rate
C. C-Reactive Protein
D. none
1.Tilting the tube
2. Increasing the length of the tube
3. Temperature above room temp
A. fall faster,
increasing ESR
B. fall slower,
decreasing ESR
will remain elevated for several days until excess fibrinogen is removed from the serum
A. CRP
C-Reactive Protein Test
B. ESR
Erythrocyte Sedimentation Rate
Specimens needs EDTA collection
A. Wintrobe or Modified Westergren
B. true Westergren
returns to normal, within a day or so, if the focus of inflammation is eliminated.
A. CRP
C-Reactive Protein Test
B. ESR
Erythrocyte Sedimentation Rate
polycythemia vera, the RBC count is increased; the blood is more viscous
A. fall faster,
increasing ESR
B. fall slower,
decreasing ESR
Males, 0-15 mm/hr; >50 yrs. old 0-20 mm/hr
Females, 0-20 mm/hr; >50 yrs. old 0-30 mm/hr
A. Westergren method
B. Modified Westergren method
C. Alifax Roller 20-Sysmex
D. all of the above
period of fast settling, usually lasts about 40 minutes
A. Lag phase
B. Decantation phase
C. Packing phase
allowed to sediment at an angle of 18º and read at the appropriate time, the total analysis time is 20 minutes
A. Westergren method
B. Modified Westergren method
C. Alifax Roller 20-Sysmex
D. all of the above
more sensitive and accurate reflection of the acute phase of inflammation. Increases within hours of inflammation process.
A. Acute Phase Reactants
B. Erythrocyte Sedimentation Rate
C. C-Reactive Protein
D. none
Sodium citrated whole blood (blue topped tube). The diluted blood is aspirated into a calibrated ESR column and the cells are allowed to settle for a period of exactly one hour.
A. Westergren method
B. Modified Westergren method
C. Alifax Roller 20-Sysmex
D. all of the above
Increasing levels of plasma proteins (primarily fibrinogen, alpha globulins, or gamma globulins)
A. fall faster,
increasing ESR
B. fall slower,
decreasing ESR
usually changes more rapidly, because it is made by the liver and secreted hours after the beginning of infection or inflammation
A. CRP
C-Reactive Protein Test
B. ESR
Erythrocyte Sedimentation Rate
Cells with abnormal shapes (poikilocytes such as sickle cells or spherocytes)
A. fall faster,
increasing ESR
B. fall slower,
decreasing ESR
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